Ti(SO_4)_2水解法制备单分散球形TiO_2的工艺研究  

Process Research of Monodisperse Spherical TiO_2 Powder by Thermal Hydrolysis of Ti(SO_4)_2

作　　者：闫慧[1] 郭贵宝[1] 王正德[1] 刘云颖[1] 王晓霞[1] 白宇辰[1] 海波[1] 

机构地区：[1]内蒙古科技大学化学与化工学院,内蒙古包头014010

出　　处：《内蒙古大学学报（自然科学版）》2017年第3期272-276,共5页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自然科学基金项目(2014BS0203);内蒙古高等学校科学研究项目(NJZZ14160);内蒙古科技大学创新基金项目(2014QDL028)

摘　　要：锐钛矿型二氧化钛是一种常见的钛的氧化物,具有无毒、折射率高、稳定性高等特性,常作为半导体材料、催化剂或储能材料.通过水解硫酸钛和正丙醇混合溶液制备了锐钛矿型的球形二氧化钛,并对水解温度、混合溶液配比、煅烧温度及时间对所得产物晶体结构和形貌的影响进行了详细研究分析.结果表明,当水解温度为80℃,以聚乙烯吡咯酮(PVP)为分散剂,水解正丙醇与硫酸钛等体积(k=1∶1)混合溶液所得前驱体经750℃高温热处理2h后得到了不含杂质的锐钛矿型的球形TiO_2,所得产物粒径均匀大小为1μm左右.Titanium dioxide powders of anatase structure are widely used as semiconductor material, catalyst or energy storage material because of their non-toxic, higher refractive index and inert chemical properties. Spherical anatase titanium dioxide was prepared by the thermal hydrolysis of ti-tanium sulfate in a mixed solvent of n-propyl alcohol （n-PrOH） and water. The structure and morphology of the powders were greatly influenced by the hydrolysis temperature, volume ratio of n- PrOH to water （k） of the solvent,and calcination temperature and time,respectively. The results show that using PVP as a steric dispersant under a temperature of 80℃ and k=1： 1 ,through thermal hydrolysis of the precursor treated at 750℃ for 2h, the monodispersed spherical anatase TiO2 powders with a diameter of 1.0μm were obtained.

关 键 词：水解法 单分散 球形 二氧化钛 

分 类 号：O614.4[理学—无机化学] O782.1[理学—化学]